“As methanol is highly soluble in water, it will distil over more at the end of distillations when vapours are richer in water. That means, methanol will appear in almost equal concentration in almost all fractions of pot still distillation in reference to ethanol (i.e., as g/hL pa), until the very end where it accumulates in the so-called tailings fraction. However, even today many professional distillers believe that methanol concentrates preferably in the first fractions.”
Hernández, J. A., Wörner, S., & Riedl, K. (2021). Methanol Mitigation during Manufacturing of Fruit Spirits with Special Regard to Novel Coffee Cherry Spirits. Foods, 10(5), 994.
“As methanol is highly soluble in water, it will distil over more at the end of distillations when vapours are richer in water. That means, methanol will appear in almost equal concentration in almost all fractions of pot still distillation in reference to ethanol (i.e., as g/hL pa), until the very end where it accumulates in the so-called tailings fraction. However, even today many professional distillers believe that methanol concentrates preferably in the first fractions.”
Hernández, J. A., Wörner, S., & Riedl, K. (2021). Methanol Mitigation during Manufacturing of Fruit Spirits with Special Regard to Novel Coffee Cherry Spirits. Foods, 10(5), 994.